Jefa 80 Quadrants


Jefa 80 quadrants
The Jefa 80 quadrants are not made from cast-aluminium like most other quadrants in the market place. As most quadrants will also function as rudder stop, one could have enormously high impact loadings. Cast-aluminium is very brittle and could easily break under these circumstances. All Jefa quadrants are fabricated from high strength Aluminium 6082 (AlMgSi1 or Duralumin). This material is enormously strong, whilst retaining high ductility (Jefa Marine produces rudder shafts from this material). This results in an extremely strong quadrant arrangement. The quadrants always have twin high precision CNC milled tracks with deep groove depths and large guide bend radii ensuring a reliable and long lifetime of the cable. 
The opening in the quadrant is meant to be used as rudder stop. When another stop arrangement is required, we can weld one or two stop blocks on a position of your choice. An optional autopilot arm can be welded underneath the quadrant or pointing aft at the quadrant boss. Please click on the picture for a larger view.
Click for larger view

Jefa radial quadrants

Part No.

Description

Price in Euro

QU1580

80 quadrant R=150, maximum bore size = 75 mm.

218

QU2080

80 quadrant R=200, maximum bore size = 75 mm.

251

QU2580

80 quadrant R=250, maximum bore size = 100 mm.

309

QU3080

80 quadrant R=300, maximum bore size = 100 mm.

410

QU3580

80 quadrant R=350, maximum bore size = 100 mm.

479

QU4080

80 quadrant R=400, maximum bore size = 125 mm.

545

QU4580

80 quadrant R=450, maximum bore size = 125 mm.

708

QU5080

80 quadrant R=500, maximum bore size = 125 mm.

847

QUBORE

bore and key quadrant to customers dimensions

77

QUSTOP

surcharge for additional rudder stop blocks

123

QUAUTO

surcharge for additional autopilot arm connected to quadrant

123

Quadrant specification form
Please click this to open the 80 quadrant specification form in Adobe PDF. This is a great help to specify a quadrant.

Please don't try to fill in this form in your browser. First save it to your hard disk and open it with Adobe Acrobat. Fill in all the fields, then save it and mail it to us.

Autopilot connection:


The best way to add an autopilot connection to the quadrant is an additional autopilot arm welded to the boss.


Special shaft connections:


Quadrants for carbon rudder stocks need a profile in stead of a round hole.
We can adjust each quadrant to suit your needs.

 
Quadrants for carbon rudder stocks need a profile in stead of a round hole.
We can adjust each quadrant to suit your needs.